Well, that is just TOO COOL.
Whenever I find old (pre-dial) LXs, the first thing I do is look inside the cord compartment to see if there's an ejection key in there. That's where Electrolux recommended people store them.
I have actually found several of them.
Still waiting to see my bigger fantasy fulfilled of purchasing an old XXX, LX, E or AE from a thrift shop, getting it home, removing the filter pad in the rear and finding the jewels and cash that someone hid in there.
Think about it ... wouldn't that be a great place to hide booty?! For that matter, any tank or canister with a cloth bag -- stuff could be put down inside the canister, the cloth bag inserted in front of it, and who on earth would ever think of looking there?!
I'll let you know when I find something back there --- besides dead coachroaches and cooties, that is... I =do= always check. Do all of yall?!
Now ensues the sound of stampeding feet as collectors run - do not walk - to their machines to look for hidden treasure, hahahaha!